Question

Срочно!!
Помогите пожалуйста решить

Answer 1

(3n+1/3)^2=9n^2+2n+1/9

(8a-1/4)^2=64a^2-4a+1/16

(6d+2/3c)^2=36d^2+8dc+4/9c^2

Answer 2

9a^2-b^2=(3a-b)(3a+b)

Answer 3

16-81c^4=(4-9c^2)(4+9c^2)

Answer 4

25c^6-a^2=(5c^3-a)(5c^3+a)

Answer 5

81-16c^4=(9-4c^2)(9+4c^2)=(3-2c)(3+2c)(3+2c)(3+2c)=(3-2c)(3+2c)^3